JP7228436B2 - Inspection method for the inside of the outer wall - Google Patents

Description

TECHNICAL FIELD The present invention relates to a technology of a method for inspecting the inside of an outer wall of a building.

2. Description of the Related Art Conventionally, techniques for inspecting the inside of an outer wall of a building are publicly known.

Patent Document 1 discloses a panel frame configured by combining upper, lower, left, and right frame members into a square ring, an exterior surface member provided on the front side (outdoor side) of the panel frame, and a back surface of the panel frame. An exterior wall panel is described comprising interior facings provided on the side (indoor side) and insulation encased within the panel frame.

In order to inspect such external wall panels for internal defects (frame rust, etc.) that cannot be determined from their appearance, it is necessary to peel off the exterior surface material or interior surface material of the exterior wall panel, or use a fiberscope ( It is necessary to make a hole for inserting a camera), and there is a problem that the outer wall panel will be damaged.

JP 2003-105919 A

The present invention has been made in view of the above circumstances, and the problem to be solved is to provide an inspection method that can inspect the condition of the inside of the outer wall of a building without damaging the outer wall. be.

The problems to be solved by the present invention are as described above, and the means for solving the problems will now be described.

That is, in claim 1, there is provided a method for inspecting the inside of an outer wall of a building, wherein an X-ray generator is directed toward a portion to be inspected within the outer wall, either on the indoor side or the outdoor side of the outer wall. and an X-ray detector is irradiated from the X-ray generator toward the inspected portion on either the indoor side or the outdoor side of the outer wall. and an X-ray irradiation step of irradiating X-rays from the X-ray generator toward the inspected portion, wherein the outer wall is formed by an outer wall panel. The outer wall panel includes a panel frame that accommodates a heat insulating material inside, the inspected portion includes a lower end frame that constitutes the lower end portion of the panel frame, and the inspected portion includes: An outdoor end of the bottom frame is included, and the bottom frame includes a bottom, an indoor rising portion rising upward from the indoor end of the bottom, and an outdoor rising from the outdoor end of the bottom. and a rising portion, wherein in the first placement step, the X-rays emitted from the X-ray generator are directed toward the indoor side of the outer wall panel without passing through the indoor-side rising portion. The X-ray generator is arranged so as to irradiate the X-ray generator on the lower end frame, and in the first arrangement step, the angle of the irradiation direction of the X-ray emitted from the X-ray generator with respect to the horizontal direction is the angle of the lower end frame. The X-ray generator is arranged so that the angle of the line connecting the lower end of the outdoor side rising portion and the upper end of the indoor side rising portion with respect to the horizontal direction is larger.

As effects of the present invention, the following effects are obtained.

In claim 1, the state inside the outer wall of the building can be examined without damaging the outer wall. In addition, the inspected portion can be easily arranged so as not to overlap the indoor-side raised portion of the lower end frame in the irradiation direction of X-rays, and thus the state of the inspected portion can be easily determined.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a vertical cross-sectional view showing an exterior wall panel to be inspected by an inspection method according to an embodiment of the present invention, and a diagram showing how the interior of the exterior wall panel is inspected; 4 is a flowchart of an inspection method according to one embodiment of the present invention;

The configuration of the exterior wall panel 1 to be inspected by the inspection method according to the first embodiment will be described below with reference to FIG. In FIG. 1, the front indicates the outdoor side, and the rear indicates the indoor side.

The outer wall panel 1 constitutes the outer wall (outer shell) of a building such as a house. In this embodiment, the structure of the building is light steel construction. The outer wall panel 1 mainly comprises a panel frame 10 , a heat insulating material 20 , an exterior panel 30 and an interior panel 40 .

The panel frame 10 is composed of a plurality of frame members that are connected to each other. The panel frame 10 accommodates the heat insulating material 20 mentioned later inside. The outer shape of the panel frame 10 is formed in a substantially rectangular parallelepiped shape. The panel frame 10 has a top frame 11 and a bottom frame 12 .

The upper end frame 11 constitutes the upper end portion of the panel frame 10 . The upper end frame 11 is arranged with its longitudinal direction directed in the left-right direction. The upper end frame 11 is formed in a substantially U-shape (substantially U-shape) when viewed from the side, and is arranged with the open side facing downward.

The bottom frame 12 constitutes the bottom end of the panel frame 10 . The lower end frame 12 is arranged with its longitudinal direction directed in the left-right direction. The lower end frame 12 is formed in a substantially U-shape (substantially U-shape) when viewed from the side, and is arranged with the open side facing upward. The bottom frame 12 has a bottom portion 12a, an outdoor side rising portion 12b and an indoor side rising portion 12c.

The bottom portion 12 a constitutes the lower portion (bottom portion) of the lower end frame 12 . The bottom portion 12a is formed in a plate shape with its plate surface directed in the up-down direction.

The outdoor-side rising portion 12 b constitutes the front end portion (outdoor-side end portion) of the lower end frame 12 . The outdoor rising portion 12b is formed to rise upward from the front (outdoor) end of the bottom portion 12a.

The indoor-side rising portion 12 c constitutes the rear end portion (indoor-side end portion) of the lower end frame 12 . The indoor-side rising portion 12c is formed to rise upward from the rear (indoor-side) end of the bottom portion 12a.

Frame members are provided at the left and right ends of the panel frame 10 so as to extend vertically so as to connect the upper end frame 11 and the lower end frame 12 . The frame material, the upper end frame 11 and the lower end frame 12 are fixed to each other by welding or the like. Thereby, the panel frame 10 is formed in a substantially rectangular parallelepiped frame shape.

The heat insulating material 20 is for insulating the outdoor side and the indoor side of the outer wall panel 1 . Glass wool, for example, is used as the heat insulating material 20 . The heat insulating material 20 is formed in a substantially rectangular parallelepiped shape. The heat insulating material 20 is housed in the space inside the panel frame 10 .

The exterior panel 30 constitutes the front side (outdoor side) of the exterior wall panel 1 . The exterior surface material 30 is formed in a rectangular plate shape when viewed from the front. The exterior surface material 30 is fixed to the front (outdoor) surfaces of the panel frame 10 and the heat insulating material 20 via appropriate members.

The interior panel 40 constitutes the rear side (indoor side) of the exterior wall panel 1 . The interior panel member 40 is formed in a rectangular plate shape when viewed from the rear. The interior panel material 40 is fixed to the rear (indoor side) surfaces of the panel frame 10 and the heat insulating material 20 via appropriate members.

Hereinafter, a method for inspecting the inside of the exterior wall panel 1 configured in this way will be described with reference to FIGS. 1 and 2. FIG.

The inspection method according to the present embodiment inspects (examines) the internal state of the exterior wall panel 1, and mainly inspects defects (rust, corrosion, etc.) of the lower end frame 12 of the exterior wall panel 1. FIG. When water enters the inside of the exterior wall panel 1, the infiltrated water tends to accumulate at the lower end portion of the exterior wall panel 1.例文帳に追加In addition, water (rainwater) often infiltrates from the outdoor side. Therefore, inside the outer wall panel 1, the outdoor end of the lower end frame 12 is considered to rust most easily. Therefore, in the inspection method according to the present embodiment, the outdoor end portion of the lower end frame 12, which is considered to rust most easily, is the inspected portion (inspection target). It should be noted that the “outdoor end of the bottom frame 12 ” is not to be construed as being limited to only the outermost end of the bottom frame 12 on the outdoor side, but rather the outside (front side) of the front-rear center of the bottom frame 12 . It shows the part of

Moreover, a radiographic examination (RT) is used in the inspection method according to the present embodiment. A specific description will be given below.

First, the X-ray generator 2 is arranged (step S11 shown in FIG. 2). The X-ray generator 2 emits X-rays from an irradiation port 2a. As the X-ray generator 2, for example, a portable X-ray generator or a battery type pulse X-ray generator can be used. The X-ray generator 2 is arranged on the indoor side (inside the room) of the outer wall panel 1 . The X-ray generator 2 is arranged on the floor F in the room via a tripod or the like. As a result, the irradiation port 2a of the X-ray generator 2 is positioned above the lower end frame 12 to be inspected. The X-ray generator 2 is arranged so as to be able to emit X-rays toward the outdoor end portion (inspected portion) of the lower end frame 12 .

The X-ray irradiation direction of the X-ray generator 2 (orientation of the irradiation port 2a) will be described in more detail below. The X-ray generator 2 is arranged with the irradiation port 2a facing forward and downward so that the outdoor end portion (inspected portion) of the lower end frame 12 is irradiated with X-rays.

Here, the distance in the front-rear direction from the inner surface (surface facing rearward) of the outdoor-side rising portion 12b of the lower end frame 12 to the surface (surface facing rearward) of the interior panel 40 is A, and the distance from the surface of the interior panel 40 is A. B is the longitudinal distance to the irradiation port 2a of the X-ray generator 2; C is the vertical distance (height) from the floor F to the irradiation port 2a of the X-ray generator 2; D is the vertical distance (height) from the upper surface (surface facing upward) to the floor F, and the inner surface (surface facing rearward) of the outdoor rising portion 12b of the lower end frame 12 to the inner surface of the indoor rising portion 12c. (the surface facing forward) is a, and the vertical distance (height) from the upper surface (surface facing upward) of the bottom portion 12a of the lower end frame 12 to the upper end of the indoor side rising portion 12c is b. do. The X-ray generator 2 is arranged so that the distances B and C indicating the position of the irradiation port 2a satisfy Equation 1 below. Note that the distances A, D, a, and b are calculated from design drawings or the like.
(Formula 1) b/a<(C+D)/(A+B)

In other words, the angle of the X-ray irradiation direction (the line L1 connecting the irradiation port 2a and the lower end of the outdoor-side rising portion 12b (the intersection of the bottom portion 12a and the outdoor-side rising portion 12b)) with respect to the horizontal direction (floor F) is E, when the angle of the line L2 connecting the lower end of the outdoor-side rising portion 12b and the upper end of the indoor-side rising portion 12c of the lower end frame 12 with respect to the horizontal direction (bottom portion 12a) is e, the X-ray generator 2 has an irradiation port. It is arranged so that the angle E indicating the orientation of 2a satisfies Equation 2 below. It should be noted that the angle e is calculated from a and b calculated from a design drawing or the like.
(Formula 2) e<E

By arranging the X-ray generator 2 in this way, the X-ray irradiation direction (the line L1 connecting the irradiation port 2a and the lower end of the outdoor-side rising portion 12b) overlaps with the indoor-side rising portion 12c of the lower end frame 12. do not. In other words, it is possible to irradiate the outdoor end portion (inspected portion) of the bottom portion 12a of the lower end frame 12 with X-rays without passing through the indoor rising portion 12c.

Next, the X-ray film 3 is placed (step S12 shown in FIG. 2). The X-ray film 3 is arranged on the exterior side of the outer wall panel 1 so as to be in close contact with the surface (the surface facing forward) of the exterior panel 30 . More specifically, the X-ray film 3 can receive (detect) X-rays emitted from the X-ray generator 2 toward the outdoor end (inspected portion) of the lower end frame 12 at its substantially central portion. placed in position. The X-ray film 3 is arranged in a cassette.

Next, X-rays are emitted from the X-ray generator 2 (step S13 shown in FIG. 2). In this step, X-rays are emitted from the X-ray generator 2 placed in step S11. The irradiated X-rays pass through the bottom frame 12 and the like and expose the X-ray film 3 .

Next, the X-ray film 3 is developed (step S14 shown in FIG. 2). When the bottom frame 12 is rusted, the rusted portion (defective portion) is thicker than the rusted portion (healthy portion). When X-rays pass through the lower end frame 12 and the like, a smaller amount of X-rays pass through the defective portion than in the healthy portion, and the X-ray film 3 is weakly exposed. For this reason, when the X-ray film 3 is developed, the portion where the amount of X-ray transmission is greater appears blacker, and a transmission photograph with a difference in gradation is obtained. By observing this transmission photograph, the state inside the outer wall panel 1 (rust on the lower end frame 12) can be grasped.

As described above, according to the inspection method according to the present embodiment, by applying the radiographic test (RT) to the exterior wall panel 1 (outer wall) of the building, the internal state of the exterior wall panel 1 (panel The rust of the frame 10) can be examined without destroying the outer wall panel 1. - 特許庁

In the interior of the exterior wall panel 1, as described above, the exterior (front) end of the lower end frame 12 is the most defective ( rust, corrosion, etc.) are likely to occur. By examining the state of this portion, it is possible to ascertain whether or not there is a defect inside the outer wall panel 1 .

In addition, if the X-ray generator 2 is arranged lower than in the present embodiment and the direction of the irradiation port 2a is arranged so as to be closer to the horizontal, in the X-ray irradiation direction, the inspected part (imaging target) The outdoor end portion of the bottom portion 12a of a lower end frame 12 overlaps with the indoor rising portion 12c of the lower end frame 12 . If there are many overlapping portions, it is difficult to determine the state of the inspected portion. On the other hand, in the inspection method according to the present embodiment, X-ray irradiation is performed by irradiating the portion to be inspected (the outdoor end portion of the bottom portion 12a of the lower end frame 12) without passing through the indoor side rising portion 12c. Since it is possible to reduce the overlapping portion with the inspected portion in the direction, it is possible to easily determine the state of the inspected portion.

As described above, the method for inspecting the exterior wall panel 1 (outer wall) according to the present embodiment is a method for inspecting the inside of the exterior wall panel 1 (outer wall) of a building, and the X-rays are generated on the indoor side of the exterior wall panel 1. A first arranging step (step S11) of arranging the device 2 so as to be able to irradiate X-rays toward a portion to be inspected in the outer wall panel 1, and an X-ray film 3 (X a second arranging step (step S12) of arranging an X-ray detector) so as to be able to detect X-rays emitted from the X-ray generator 2 toward the portion to be inspected; and an X-ray irradiation step (step S13) of irradiating X-rays toward the inspection part.
By configuring in this way, the state inside the exterior wall panel 1 of the building can be examined without damaging the exterior wall panel 1 .

The outer wall is composed of an outer wall panel 1. The outer wall panel 1 includes a panel frame 10 that accommodates a heat insulating material 20 therein. A bottom frame 12 is included.
With this configuration, by examining the state of the lower end frame 12, which is most prone to defects (rust, corrosion, etc.) due to water entering the interior of the exterior wall panel 1 and flowing down, the state of the exterior wall panel 1 can be checked. It is possible to grasp the presence or absence of internal defects.

The inspected portion includes the outdoor end portion of the lower end frame 12 .
With this configuration, the outdoor end portion of the lower end frame 12 is most prone to defects (rust, corrosion, etc.) due to water (rainwater) that enters the interior of the outer wall panel 1 from the outdoor side and flows down. By examining the state of , the presence or absence of defects inside the exterior wall panel 1 can be grasped.

The lower end frame 12 includes a bottom portion 12a (bottom surface), an indoor rising portion 12c rising upward from the indoor end of the bottom portion 12a, and an outdoor rising portion rising upward from the outdoor end of the bottom portion 12a. 12b, and in the first placement step (step S11), the X-ray emitted from the X-ray generator 2 toward the indoor side of the outer wall panel 1 moves the indoor side rising portion 12c. The X-ray generator 2 is arranged so that the part to be inspected is irradiated without any intervention.
With this configuration, the part to be inspected (the outdoor end of the lower end frame 12) can be imaged without overlapping the rising part 12c on the indoor side of the lower end frame 12, making it easy to determine the state of the part to be inspected. can do.

In the first arrangement step (step S11), the angle E of the radiation direction (line L1) of the X-rays emitted from the X-ray generator 2 with respect to the horizontal The X-ray generator 2 is arranged so that the angle e of a line L2 connecting the lower end of the indoor side rising portion 12b and the upper end of the indoor side rising portion 12c with respect to the horizontal direction is larger than e.
By configuring in this way, the portion to be inspected (the outdoor end portion of the lower end frame 12) can be easily prevented from overlapping the indoor rising portion 12c of the lower end frame 12 in the irradiation direction of X-rays. As a result, it is possible to easily determine the state of the inspected portion.

In addition, the outer wall panel 1 according to the present embodiment is one form of an outer wall.
Further, the X-ray film 3 according to this embodiment is an embodiment of an X-ray detector.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above configuration, and various modifications are possible within the scope of the invention described in the claims.

For example, in the present embodiment, a light-gauge steel-framed building is targeted for inspection, but the structure of the building is not limited to this. Other structures such as

Further, in the present embodiment, the outer wall panel 1 is to be inspected, but it does not necessarily have to be panel-shaped, and any outer wall that constitutes the outer shell of the building may be used.

Further, in this embodiment, the X-ray generator 2 is arranged on the indoor side (inside the room) of the outer wall panel 1 (step S11), and the X-ray film 3 is arranged on the outdoor side of the outer wall panel 1. However, the X-ray generator 2 may be arranged on the outdoor side of the outer wall panel 1 and the X-ray film 3 may be arranged on the indoor side of the outer wall panel 1 .

In this embodiment, the lower end frame 12 of the panel frame 10 is included in the inspected portion (imaging range). Frames, insulation 20, crosspieces (not shown), etc. may be included. This makes it possible to check for rust on the frame material, moisture on the heat insulating material 20, corrosion on crosspieces, and the like.

Further, in this embodiment, the X-ray film 3 is used as the X-ray detector, but an imaging plate (IP) may be used. When an imaging plate is used, the imaging result can be output as a digital image by reading the X-ray image data recorded on the imaging plate with a reading device. A flat panel detector can also be used as the X-ray detector.

REFERENCE SIGNS LIST 1 outer wall panel 2 X-ray generator 3 X-ray film 10 panel frame 12 lower end frame 12a bottom portion 12b outdoor rising portion 12c indoor rising portion

Claims (1)

A method for inspecting the interior of an exterior wall of a building, comprising:
a first arranging step of arranging an X-ray generator on either the indoor side or the outdoor side of the outer wall so as to be able to irradiate an X-ray toward a portion to be inspected within the outer wall;
a second arranging step of arranging an X-ray detector on the other of the indoor side or the outdoor side of the outer wall so as to be able to detect X-rays emitted from the X-ray generator toward the inspected portion; ,
an X-ray irradiation step of irradiating X-rays from the X-ray generator toward the inspection target;
and
The outer wall is composed of an outer wall panel,
The outer wall panel is
Equipped with a panel frame that accommodates a heat insulating material inside,
The portion to be inspected includes a lower end frame forming a lower end portion of the panel frame,
The portion to be inspected includes an outdoor end portion of the lower end frame,
The bottom frame is
comprising a bottom surface, an indoor rising portion rising upward from the indoor end of the bottom surface, and an outdoor rising portion rising upward from the outdoor end of the bottom surface,
In the first arranging step,
The X-ray generator is arranged on the indoor side of the outer wall panel so that the X-rays emitted from the X-ray generator are applied to the inspected portion without passing through the indoor-side rising portion. death,
In the first arranging step,
The angle of the irradiation direction of the X-ray emitted from the X-ray generator with respect to the horizontal direction is greater than the angle with respect to the horizontal direction of the line connecting the lower end of the outdoor-side rising portion and the upper end of the indoor-side rising portion of the lower end frame. positioning the X-ray generator such that
A method of inspecting the inside of an outer wall.

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